Unit 1 Mechanisms - SGO Test 2024

Study the gear train in the image. The purpose of the center gear is to _________.

• allow the drive and driven gear to rotate in the same direction

• allow the drive and driven gear to rotate in opposite directions

• increase the output RPM's of the driven gear

• increase the output torque of the driven gear

In a third class lever, the distance from the effort to the fulcrum is _________ the distance from the load/resistance to the fulcrum.

• less than or equal to

• less than

• greater than

• greater than or equal to

When used to pry open a can of paint, a screwdriver functions as a _________.

• screw

• inclined plane

• wheel and axle

• lever

Given the pulley configuration in the image, what is the Ideal Mechanical Advantage of the system?

• 1

• 2

• 5

• 10

A POE student is using the ramp shown to raise an object 4 feet above the ground. The ideal mechanical advantage of the ramp is _______.

• 0.316

• 3.163

• 1.05

• 3.0

Figure 7 represents a belt driven system. Pulley B, which has a diameter of 16 inches, is being driven by pulley A, which has a diameter of 4 inches. If pulley A is spinning at 60 RPMs, then pulley B is spinning at _____________ RPMs.

• 4

• 64

• 240

• 15

When calculating gear ratio, which of the following has an inverse relationship to the others?

• Torque

• Diameter of the Gear

• Angular Velocity

• Number of Teeth

In a second class lever the distance from the effort to the fulcrum is _______________ the distance from the load to the fulcrum.

• less than

• less than or equal to

• greater than or equal to

• greater than

A wheelbarrow is an example of which class of lever?

• First class

• Second Class

• Third Class

• Fourth Class

Scissors are an example of which class of lever?

• Second Class

• Third Class

• Fourth Class

• First Class